Modified nano SiOx composite polyurethane foam and its preparation method and use

Abstract

The invention relates to a modified nm SiOx compound polyurethane foam and its preparing method and application. The foam is made by adding modified SiOx nm particle in the foaming course of polyurethane, can be used as carrier for fixing microbe, its surface effect cooperation with SiOx particle nm effect will generate super strong absorption. Reactive functional group contained in the modified SiOx particle will form valence bond with foam frame and join in its net structure, which has strengthened its distribution stability in the carrier as well as legally fixed microbe by carrier compounding method. The modified nm SiOx compound polyurethane foam has hydrophily micro environment which is benefit for fixing metabolism and proliferation of microbe, can increase biological load so as to raise the biological reacting efficiency, meanwhile, the strengthening effect of modified nm particle and its strength to the structure will advance the physical as well as chemical performance of foam carrier, enabling it with outstanding resistance to impact.

Description

technical field [0001] The invention relates to a modified nano-SiO X Syntactic polyurethane foam and its preparation method and application. Background technique [0002] Polyurethane foam is one of the most widely used and most produced foam plastics. It has been widely used in pads for daily necessities, thermal insulation materials, and industrial materials such as sound absorption, sound insulation, filtration, and thermal insulation. U.S. Patent US4983299 fills activated carbon powder in polyurethane foam and Chinese patent CN1105649A adds single-component activated carbon powder in the preparation of polyurethane foam to prepare activated carbon composite polyurethane foam microbial immobilization carrier. Although the addition of activated carbon powder can improve the adsorption of polyurethane foam However, its hydrophilicity is reduced, which is not conducive to the metabolic proliferation of the immobilized microorganisms. [0003] Nanoparticles are widely used...

AI Technical Summary

Problems solved by technology

However, the agglomeration of nanoparticles affects their dispersion in polymer materials, and it is difficult to disperse uniformly in polymer systems only by physical mixing.